I saw this at Wally world.
It is a tubular ice tray.It holds 27 tubes of either size,ready for the range.
$3. Sorry the white tubes didn't show up very well.
The tubes are easy to grab and replace.
I figure for load work up I can load like 80grn in 3 then 85,90,95,100,105,110,115,120 etc
it would all be organized and safe
I will get one more tomorrow